diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-09-02 20:46:26 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-03 14:02:50 -0700 |
| commit | e4b57722d0e6be8820039a7d506378640aee5073 (patch) | |
| tree | d0a647a5b60cbf46f128e6d2ac4870250e476f3b /mm/shmem.c | |
| parent | 7ad0414bded6e8678840368be5cc72b9957a4478 (diff) | |
| download | linux-e4b57722d0e6be8820039a7d506378640aee5073.tar.gz | |
shmem: convert shmem_get_link() to use a folio
Symlinks will never use a large folio, but using the folio API removes a
lot of unnecessary folio->page->folio conversions.
Link: https://lkml.kernel.org/r/20220902194653.1739778-31-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/shmem.c')
| -rw-r--r-- | mm/shmem.c | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index 4948ceffcc9fd0..e6e934adeed7f1 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -3143,40 +3143,41 @@ static int shmem_symlink(struct user_namespace *mnt_userns, struct inode *dir, static void shmem_put_link(void *arg) { - mark_page_accessed(arg); - put_page(arg); + folio_mark_accessed(arg); + folio_put(arg); } static const char *shmem_get_link(struct dentry *dentry, struct inode *inode, struct delayed_call *done) { - struct page *page = NULL; + struct folio *folio = NULL; int error; + if (!dentry) { - page = find_get_page(inode->i_mapping, 0); - if (!page) + folio = filemap_get_folio(inode->i_mapping, 0); + if (!folio) return ERR_PTR(-ECHILD); - if (PageHWPoison(page) || - !PageUptodate(page)) { - put_page(page); + if (PageHWPoison(&folio->page) || + !folio_test_uptodate(folio)) { + folio_put(folio); return ERR_PTR(-ECHILD); } } else { - error = shmem_getpage(inode, 0, &page, SGP_READ); + error = shmem_get_folio(inode, 0, &folio, SGP_READ); if (error) return ERR_PTR(error); - if (!page) + if (!folio) return ERR_PTR(-ECHILD); - if (PageHWPoison(page)) { - unlock_page(page); - put_page(page); + if (PageHWPoison(&folio->page)) { + folio_unlock(folio); + folio_put(folio); return ERR_PTR(-ECHILD); } - unlock_page(page); + folio_unlock(folio); } - set_delayed_call(done, shmem_put_link, page); - return page_address(page); + set_delayed_call(done, shmem_put_link, folio); + return folio_address(folio); } #ifdef CONFIG_TMPFS_XATTR |